INTRODUCTION

What is an LLM?

A Large Language Model is an AI system trained on vast amounts of text to understand, generate, and reason with human language.

How LLMs Work

Training Data

Billions of web pages, books, articles

Pattern Learning

Neural networks find statistical patterns

Understanding

Contextual meaning & relationships

Generation

Coherent, context-aware responses

Neural Network Architecture

Input Hidden Layers Attention Output

Tokenization: Breaking Text into Chunks

"The cat sat on the mat"

"The" " cat" " sat" " on" " the" " mat"

Pattern Recognition

LLMs learn statistical patterns from massive datasets, understanding grammar, facts, and reasoning styles without explicit programming.

Context Awareness

Using attention mechanisms, LLMs weigh the importance of different words in relation to each other, maintaining coherence.

Probabilistic Output

LLMs predict the next token based on probability distributions, generating human-like text through iterative sampling.

Next in Series

What are Tokens?

BPE, vocabularies & how text becomes numbers